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Aside from the importance of each species with respect to itself and the global diversity of living organisms, many of these species are of fundamental economic importance to us all so we need to understand why these populations are declining so as to be able to stop and reverse the decline.

Osteopilus septentrionalis

This new paper in the highly important journal Nature offers us one clue on how amphibians may be helped to start to resist pathogenic fungi. This particular group of frogs are living in an environment that has become infested with a pathogenic fungus (Batrachochytrium dendrobatidis). Conservationalists have taken frogs away from the infested areas and bred them successfully in captivity, however when they re-introduce them to the infected areas they fail to thrive - after all the fungus is still there so we might predict this outcome.

How can we help?

It turns out that if you expose the frogs to the fungus two things happen to enable resistance: they quickly learn to avoid it, and gradually become immune. This happens whether or not the fungus is alive. If then we carefully expose the frogs to dead fungus prior to re-release into the wild they should be able to avoid the fungus and thus thrive more readily. Perhaps other organisms have similar survival strategies we can use to help protect them?

The authors put it like this:

these results offer hope that other wild animal taxa threatened by invasive fungi might be rescued by management approaches based on herd immunity.